Laying of roofing material
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, 02-01-2022 at 10:50 AM (245 Views)
Repairing a garage roof with roofing felt is an inexpensive but tedious process:
- before laying, you need to let the material lie down and level out, this will take a day;
- we begin the installation of roofing material from the lowest point of the pitched roof;
- first, it is necessary to apply a layer of tar, on which we lay strips of roofing material;
- we perform the actions in stages - we applied the tar, glued the strip;
- coating strips overlap 10 - 15 centimeters;
- along the edges of the strip, we must isolate the joints with molten bitumen;
- if the base is uneven and bubbles have formed, then they must be carefully cut with a knife and leveled. Be sure to apply a layer of tar over the cut;
- depending on the slope of the garage roof, it is necessary to choose the number of layers of roofing material: a slope of up to 15 degrees - four layers, a slope of up to 40 degrees - three layers, a slope of more than 45 degrees - two layers of coating.
Advice. We spread the bottom layer with roofing felt or fine-grained roofing material, and only coarse-grained roofing material is suitable for the top layer, it is more durable.
Covering the roof of the garage with bikrost is simple, fast and inexpensive. With a bikrost, you can patch up holes in the roof quickly and easily with a gas burner. The bikrost repair and installation sequence is as follows:
- clean and prime the entire old roof surface;
- roll out a roll of bicrost by 50 cm and heat it with a gas burner. Pay special attention to the edges and corners of the tape;
- we press the heated sheet to the roof. It is convenient to use a mop (like the letter T) or a heavy roller for tight pressing with a stick;
- we sequentially heat 50 cm of bicrost and glue it to the roof in the same way;
- The overlap of the strips of material must be no less than 8 cm.
Bikrost is much more convenient and stronger than roofing felt, but you need to work quickly, the material quickly hardens. It is better to work with a partner - one rolls and presses, the other heats the material with a burner.
Important. You can not walk on a newly laid coating, as you can break the tightness and the roof will be uneven.
Liquid rubber - reliable, durable and comfortable
Liquid rubber can also be sprayed onto corrugated board, this will reduce corrosion and provide good waterproofing of the roof.
Polyurethane mastic for roofing, popularly known as “liquid rubber”, is a miracle material that is a pleasure to work with.
In terms of density, viscosity and consistency, the composition is similar to water, so you can safely cover the entire cleaned surface of the roof with an airless spray under pressure. A regular sprayer cannot be used. After polymerization, liquid rubber forms a dense and durable sealed film.
Such a coating has no seams, is completely monolithic and hermetic, there are practically no leakages of the coating for 20 years.
Covering the entire roof with liquid rubber is simple:
- clean the surface, dry and primer;
- on the primer, it is necessary to lay a layer of geotextile on all junctions and joints of the roof, special attention to the corners;
- geotextiles must be installed inside and out;
- the composition is applied from a special machine - a two-channel sprayer.
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